Query of length 4042 hangs

All,
Has anyone had a problem where a query of exactly 4042 bytes hangs when run from the thin driver? I'm pretty sure this is the exact problem, since one other fellow reported it. His only solution was to not use the thin driver, but that's not a good option for us. Here's what I know:
* Query is 4042 bytes long
* Query runs fine from TOAD, but from JDBC (Statement.execute(String)) it never returns.
* Query runs fine from JDBC if I alter the length in any way, e.g. add or subtract a space, etc.
* Seems to work fine against our dev database on NT but not the test database on AIX.
* Oracle version is 8.1.7.
* Used several of versions of the driver, including the latest.
Any ideas?

Sure. I have left this formatted exactly as it is when I inspect the String variable which holds the SQL at run time. Pasting the string to this HTML TEXTAREA element seems to trim some spaces and/or tabs, so the length isn't going to be the same, but trust me, it's normally 4042.
select StudBase.CUSTOMER_ID, StudBase.CUSTOMER_NUMBER, StudBase.CUSTOMER_NAME, StudBase.CCX_ID, StudBase.student_key, StudBase.student_edit_id, StudBase.student_move_id, StudBase.student_merge_id, StudBase.student_delete_id, StudBase.student_last_name, StudBase.student_first_name, StudBase.student_middle_name, StudBase.student_gender, StudBase.student_date_of_birth, StudBase.student_date_of_birth_text, StudBase.student_id student_id, StudBase.student_grade, StudBase.STUDENT_EXTERNAL_STUDENT_ID, StudBase.student_update_date, StudBase.student_updated_by, StudData.student_property, StudData.student_property_value from (select CUST.ID CUSTOMER_ID, CUST.CUSTOMER_NUMBER CUSTOMER_NUMBER, CUST.NAME CUSTOMER_NAME, CCX.ID CCX_ID, stud.id student_id, Stud.student_key, stud.edit_sc_id student_edit_id, stud.move_sc_id student_move_id, stud.merge_sc_id student_merge_id, stud.delete_sc_id student_delete_id, Stud.last_name student_last_name, Stud.FIRST_NAME student_first_name, Stud.MIDDLE_NAME student_middle_name, Stud.gender student_gender, Stud.DOB student_date_of_birth, Stud.dob_text student_date_of_birth_text, Stud.GRADE student_Grade, Stud.EXTERNAL_STUDENT_ID student_EXTERNAL_STUDENT_ID, Stud.update_date student_update_date, Stud.updated_by student_updated_by from T_STUDENTS Stud, T_CUST_CYCLE_X CCX, T_CUSTOMERS CUST where Stud.id in (1074657,1074525,1074573,1074635,1074641,1074616) and STUD.CCX_ID = CCX.ID and CCX.CUST_ID = CUST.ID) StudBase, (select sd.stud_id student_id, ad.NAME student_property, sd.VALUE student_property_value from T_STUDENT_DATA sd, T_PRESENTATION_ATTRIBUTES PA, T_PAGE_LAYOUTS PL, T_ATTRIBUTE_DEFINITIONS AD where sd.STUD_ID in (1074657,1074525,1074573,1074635,1074641,1074616) and sd.AD_ID = ad.id and ad.id = pa.AD_ID and pl.cycle_id = 9417 and pl.id = pa.LAYOUT_ID and pl.name = 'RECCHG_STUD_DETAIL_BODY')StudData where StudBase.student_id = studData.student_id (+) ORDER BY STUDENT_ID

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Message was edited by:
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shared_pool_reserved_size 5452595 TRUE size in bytes of reserved area of shared pool
shared_pool_size 0 TRUE size in bytes of shared pool
What other parameters are important? How could I get a good picture to see what's really going on?
Some pointers, help would be appreciated.
Regards,
Remco

Below is the base-query that is causing the problems
SELECT /* Public - Internal learner */ r.id reg_id, i.id order_item_id, o.id order_id, o.order_no order_number, e.id person_id, format_name(e.fname , e.lname , @@005) learner_name , c.id company_id, c.name2 , ent.id entid, ctype.id ctypeid, ctype.name , i.status , items.description item_desc, substr ( i.flags , 1 , 1 ) is_conf , r.status status1, rs.description description1 , r.wlist_priority , r.reg_no , r.flags , o.status status2, o.split, null learnerViewOnly, null statusViewOnly, i.approved_status, decode(substr(r.flags,2,1),'1','true','false') isWalkIn, oa.id offering_action_id, oa.status profile_status ,c.name2 org_name ,ctype.name audience_sub_type ,items.description description ,o.order_no order_no ,orderList.description order_status ,approvalList.description approval_status ,e.fname learner_first_name ,e.lname learner_last_name FROM tpt_registration r INNER JOIN tpt_oe_order_items i ON i.reg_id = r.id INNER JOIN tpt_oe_order o ON i.order_id = o.id INNER JOIN cmt_person e ON r.student_id = e.id INNER JOIN tpt_company c ON e.company_id = c.id INNER JOIN tpt_offering_action oa on r.offering_action_id = oa.id LEFT OUTER JOIN tpt_roster_template_entry ent ON r.ros_temp_ent_id = ent.id LEFT OUTER JOIN tpt_customer_type ctype ON ent.customer_type_id = ctype.id INNER JOIN fgt_ext_sys_list_of_val rs ON to_char ( r.status ) = rs.name INNER JOIN fgt_ext_sys_list_of_val items ON to_char ( i.status ) = items.name INNER JOIN fgt_ext_sys_list_of_val orderList ON to_char ( o.status ) = orderList.name INNER JOIN fgt_ext_sys_list_of_val approvalList ON to_char(i.approved_status) = approvalList.name WHERE e.type = 100 AND r.class_id = @@001 AND r.status = nvl ( to_number(@@002) , r.status ) AND rs.locale_id = @@005 AND rs.list_id = 'sysli000000000000100' AND items.locale_id = @@005 AND items.list_id = 'sysli000000000000131' AND orderList.list_id = 'sysli000000000000129' AND orderList.locale_id = @@005 AND approvalList.list_id = 'sysli000000000000165' AND approvalList.locale_id = @@005 AND ((@@003 is null) or (@@003 is not null and r.student_id = @@003))
UNION
SELECT /* Public - External learner */ r.id reg_id, i.id order_item_id, o.id order_id, o.order_no , e.id person_id, format_name(e.fname , e.lname , @@005) , c.id company_id, c.name2 , ent.id entid, ctype.id ctypeid, ctype.name , i.status , items.description , substr ( i.flags , 1 , 1 ) is_conf , r.status status1, rs.description description1, r.wlist_priority , r.reg_no , r.flags , o.status status2, o.split, null learnerViewOnly, null statusViewOnly, i.approved_status, decode(substr(r.flags,2,1),'1','true','false') isWalkIn, oa.id offering_action_id, oa.status profile_status ,c.name2 org_name ,ctype.name audience_sub_type ,items.description description ,o.order_no order_no ,orderList.description order_status ,approvalList.description approval_status ,e.fname learner_first_name ,e.lname learner_last_name FROM tpt_registration r INNER JOIN tpt_oe_order_items i ON i.reg_id = r.id INNER JOIN tpt_oe_order o ON i.order_id = o.id INNER JOIN cmt_person e ON r.student_id = e.id INNER JOIN tpt_offering_action oa on r.offering_action_id = oa.id LEFT OUTER JOIN tpt_company c ON e.company_id = c.id LEFT OUTER JOIN tpt_roster_template_entry ent ON r.ros_temp_ent_id = ent.id LEFT OUTER JOIN tpt_customer_type ctype ON ent.customer_type_id = ctype.id INNER JOIN fgt_ext_sys_list_of_val rs ON to_char ( r.status ) = rs.name INNER JOIN fgt_ext_sys_list_of_val items ON to_char ( i.status ) = items.name INNER JOIN fgt_ext_sys_list_of_val orderList ON to_char ( o.status ) = orderList.name INNER JOIN fgt_ext_sys_list_of_val approvalList ON to_char(i.approved_status) = approvalList.name WHERE e.type = 200 AND r.class_id = @@001 AND r.status = nvl ( to_number(@@002) , r.status ) AND rs.locale_id = @@005 AND rs.list_id = 'sysli000000000000100' AND items.locale_id = @@005 AND items.list_id = 'sysli000000000000131' AND orderList.list_id = 'sysli000000000000129' AND orderList.locale_id = @@005 AND approvalList.list_id = 'sysli000000000000165' AND approvalList.locale_id = @@005 AND ((@@003 is null) or (@@003 is not null and r.student_id = @@003))
UNION
SELECT /* Public - Unassigned learner */ r.id reg_id, i.id order_item_id, o.id order_id, o.order_no , null person_id, null , null company_id, null , ent.id entidd, ctype.id ctypeid, ctype.name , i.status , items.description , substr ( i.flags , 1 , 1 ) is_conf , r.status status1, rs.description description1, r.wlist_priority , r.reg_no , r.flags , o.status status2, o.split, null learnerViewOnly, null statusViewOnly, i.approved_status, decode(substr(r.flags,2,1),'1','true','false') isWalkIn, oa.id offering_action_id, oa.status profile_status ,'' org_name ,ctype.name audience_sub_type ,items.description description ,o.order_no order_no ,orderList.description order_status ,approvalList.description approval_status ,'' learner_first_name ,'' learner_last_name FROM tpt_registration r INNER JOIN tpt_oe_order_items i ON i.reg_id = r.id INNER JOIN tpt_oe_order o ON i.order_id = o.id INNER JOIN tpt_offering_action oa on oa.id = r.offering_action_id LEFT OUTER JOIN tpt_roster_template_entry ent ON r.ros_temp_ent_id = ent.id LEFT OUTER JOIN tpt_customer_type ctype ON ent.customer_type_id = ctype.id INNER JOIN fgt_ext_sys_list_of_val rs ON to_char ( r.status ) = rs.name INNER JOIN fgt_ext_sys_list_of_val items ON to_char ( i.status ) = items.name INNER JOIN fgt_ext_sys_list_of_val orderList ON to_char ( o.status ) = orderList.name INNER JOIN fgt_ext_sys_list_of_val approvalList ON to_char(i.approved_status) = approvalList.name WHERE r.class_id = @@001 AND r.status = nvl ( to_number(@@002) , r.status ) AND r.student_id is null AND rs.locale_id = @@005 AND rs.list_id = 'sysli000000000000100' AND items.locale_id = @@005 AND items.list_id = 'sysli000000000000131' AND orderList.list_id = 'sysli000000000000129' AND orderList.locale_id = @@005 AND approvalList.list_id = 'sysli000000000000165' AND approvalList.locale_id = @@005 AND @@003 is null
UNION
SELECT /* Private - Internal learner */ r.id reg_id, i.id order_item_id, o.id order_id, o.order_no , e.id person_id, format_name(e.fname , e.lname , @@005) , c.id company_id, c.name2 , ent.id entid, ctype.id ctypeid, ctype.name , i.status , items.description , substr ( i.flags , 1 , 1 ) is_conf , r.status status1, rs.description description1 , r.wlist_priority , r.reg_no , r.flags , o.status status2, o.split, null learnerViewOnly, null statusViewOnly, i.approved_status, decode(substr(r.flags,2,1),'1','true','false') isWalkIn, oa.id offering_action_id, oa.status profile_status ,c.name2 org_name ,ctype.name audience_sub_type ,items.description description ,o.order_no order_no ,orderList.description order_status ,approvalList.description approval_status ,e.fname learner_first_name ,e.lname learner_last_name FROM tpt_registration r INNER JOIN let_pvt_offering_request pvt_offreq ON pvt_offreq.class_id = r.class_id INNER JOIN tpt_offering_action oa on oa.id = r.offering_action_id LEFT OUTER JOIN tpt_oe_order_items i ON i.part_id = pvt_offreq.id LEFT OUTER JOIN tpt_oe_order o ON i.order_id = o.id INNER JOIN cmt_person e ON r.student_id = e.id LEFT OUTER JOIN tpt_company c ON e.company_id = c.id LEFT OUTER JOIN tpt_roster_template_entry ent ON r.ros_temp_ent_id = ent.id LEFT OUTER JOIN tpt_customer_type ctype ON ent.customer_type_id = ctype.id INNER JOIN fgt_ext_sys_list_of_val rs ON to_char ( r.status ) = rs.name LEFT OUTER JOIN fgt_ext_sys_list_of_val items ON to_char ( i.status ) = items.name AND items.locale_id = @@005 AND items.list_id = 'sysli000000000000131' LEFT OUTER JOIN fgt_ext_sys_list_of_val orderList ON to_char ( o.status ) = orderList.name AND orderList.list_id = 'sysli000000000000129' AND orderList.locale_id = @@005 LEFT OUTER JOIN fgt_ext_sys_list_of_val approvalList ON to_char(i.approved_status) = approvalList.name AND approvalList.list_id = 'sysli000000000000165' AND approvalList.locale_id = @@005 WHERE e.type = 100 AND r.class_id = @@001 AND r.status = nvl ( to_number(@@002) , r.status ) AND rs.locale_id = @@005 AND rs.list_id = 'sysli000000000000100' AND ((@@003 is null) or (@@003 is not null and r.student_id = @@003))
UNION
SELECT /* Private - External learner */ r.id reg_id, i.id order_item_id, o.id order_id, o.order_no , e.id person_id, format_name(e.fname , e.lname , @@005) , c.id company_id, c.name2 , ent.id entid, ctype.id ctypeid, ctype.name , i.status , items.description , substr ( i.flags , 1 , 1 ) is_conf , r.status status1, rs.description description1 , r.wlist_priority , r.reg_no , r.flags , o.status status2, o.split, null learnerViewOnly, null statusViewOnly, i.approved_status, decode(substr(r.flags,2,1),'1','true','false') isWalkIn, oa.id offering_action_id, oa.status profile_status ,c.name2 org_name ,ctype.name audience_sub_type ,items.description description ,o.order_no order_no ,orderList.description order_status ,approvalList.description approval_status ,e.fname learner_first_name ,e.lname learner_last_name FROM tpt_registration r INNER JOIN let_pvt_offering_request pvt_offreq ON pvt_offreq.class_id = r.class_id INNER JOIN tpt_offering_action oa on r.offering_action_id = oa.id LEFT OUTER JOIN tpt_oe_order_items i ON i.part_id = pvt_offreq.id LEFT OUTER JOIN tpt_oe_order o ON i.order_id = o.id INNER JOIN cmt_person e ON r.student_id = e.id LEFT OUTER JOIN tpt_company c ON e.company_id = c.id LEFT OUTER JOIN tpt_roster_template_entry ent ON r.ros_temp_ent_id = ent.id LEFT OUTER JOIN tpt_customer_type ctype ON ent.customer_type_id = ctype.id INNER JOIN fgt_ext_sys_list_of_val rs ON to_char ( r.status ) = rs.name LEFT OUTER JOIN fgt_ext_sys_list_of_val items ON to_char ( i.status ) = items.name AND items.locale_id = @@005 AND items.list_id = 'sysli000000000000131' LEFT OUTER JOIN fgt_ext_sys_list_of_val orderList ON to_char ( o.status ) = orderList.name AND orderList.locale_id = @@005 AND orderList.list_id = 'sysli000000000000129' LEFT OUTER JOIN fgt_ext_sys_list_of_val approvalList ON to_char(i.approved_status) = approvalList.name AND approvalList.locale_id = @@005 AND approvalList.list_id = 'sysli000000000000165' WHERE e.type = 200 AND r.class_id = @@001 AND r.status = nvl ( to_number(@@002) , r.status ) AND rs.locale_id = @@005 AND rs.list_id = 'sysli000000000000100' AND ((@@003 is null) or (@@003 is not null and r.student_id = @@003)) ORDER BY 34,35,28,29,31,30,33,32

Select Query Hangs / No DB Locks / Query Plan is good

I have below query in application which hangs ( Only sometimes ) and there are some session which also try to insert data into this tables also starts getting hanged.
SELECT DISTINCT F2 || ' - ' || F3 || ' - ' || F4
FROM Table1
WHERE F4 = 6160
AND F1|| F2|| F3 NOT IN (
SELECT F2|| F3 || F4
FROM Table2
WHERE F1 = 181)
F2 - varchar(4)
F3- varchar(100)
F4- varchar(20)
F1,F1 are NUMBER
Table1 has one unique index comprising all fields in ORDER F1,F2, X,F3, F4,Y - X,Y are some different field.
Table2 has one unique index comprising all fields in ORDER F1,F3, F4,F2 are some different field.
Below are facts from DBA ----
1- Session Query Plan was excellent -
2 - No tables were locked in DB
3 - Statistics on this table Table1 was calculated on Feb, 2008 and shows 8 millions rows but actual current row count is 13 million. DBA says sometime analyzing statistics again may cause poor query performance.
4- There were 8 session in DB, 1 was for above select statement and other 7 were trying to insert data into above table.
Can you please advise what could else be verified to root cause issue as it has been hanging many times - hence causing other session to hang ?
Many Thanks

Can you clarify exactly what the DBA meant by "No tables were locked in DB"? What was the exact query that was used to determine this? Was it hitting V$LOCK (GV$LOCK in a RAC system)? Or the DBA_BLOCKERS and DBA_WAITERS tables? Or something else? The specific query here is important because there is a world of difference between a row-level lock and a table-level lock. Of course, locks would never prevent a SELECT statement from running, but it could cause problems for the INSERT statements.
I strongly concur with Old DBA's suggestion about refactoring the query to not do the concatenation in the NOT IN clause.
Are the F4 = 6160 and F1 = 181 conditions really using hard-coded numeric literals? Or are these bind variables? Is the data in F1 or F4 skewed-- that is, are there certain values that are more likely than other values?
How many rows would you expect to be in Table1 with an F4 value of 6160? How many rows in Table2 with a F1 value of 181?
Justin

WMI query hanging

I have some code (VB Script) that is collecting CPU performance metrics from WMI. The code works well on all of the servers (identical servers) but after a period of time (8 hours, 30 hours, other random times) on some of the servers the query hangs.
After several hours (e.g. 8 hours) the query will work again on the server. I have used WBEMTEST to query the CIMv2 namespace to perform the same query on the server where WMI is having a problem and it also hangs.
The query eventually times out and does not return a value.
I have asked the team to rebuild WMI and after they completed the rebuild, the problem still occurs.
Since the code is only performing a read operation on WMI, I do not see how the query can cause the hang of WMI.
Any ideas on what I should do next?
Thanks

Hi,
Before going further, would you please let me know whether install all
necessary Windows Updates on those servers?
à
but after a period of time (8 hours, 30 hours, other random times) on some of the servers the query hangs.
When the
hang issue occurred, please check if consume high RAM or CPU. Just a confirmation, thanks for your understanding.
In addition, please use the WMI Diagnosis Utility and check if can help you to analyze this issue. for more
details, please refer to following articles.
WMI Diagnosis Utility
WMIDiag 2.1 is here!
If any update, please feel free to let me know.
Hope this helps.
Best regards,
Justin Gu

Length Of Query Description

Can Any One Suggest Me How To Maximize Query Description Length
i.e More than 120 Char .
Regards
Supraja.K

Hello,
Thanks Rohan.
I checked the table and it contains the field called TXTLG which is Char 60. You need to modify this table and make the length of as many char as you want, save and activate. I am not sure, if you need to perform this activity in directly into production or you can transport the table.
It may give you error while you change the data type of the field as table may contain data. If you get such error, I dont see any other solution, because it is practically impossible to empty this table.
- Danny.

Query of length 4042 hangs

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